Copies of author's previously published articles inserted.Bibliography: leaves 190-225.vi, 225 leaves, [66] leaves of plates : ill. ; 30 cm.Examines the time course and degree of neutrophil polarisation in plasma and compares this response with those induced by FMLP, purified plasma proteins (particularly immunoglobulin type G) and chemotactic imflammatory mediators. In addition, the possible roles of extracellular divalent cations (Ca2+ and Mg2+), intracellular Ca2+ ions and actin microfilament distribution during responses to each stimulus are examined.Thesis (Ph.D.)--University of Adelaide, Dept. of Medicine, 199